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- W4220970064 abstract "Double perovskite La2NiMnO6 (LNMO) nanoparticles and nanorods were synthesized via a hydrothermal process, where only aqueous inorganic solvents are used to regulate the microscopic morphology of the products without using any organic template. They crystallized in a monoclinic (P21/n) double perovskite crystal structure. The LNMO nanoparticles exhibited spherical morphology with an average particle size of 260 ± 60 nm, and the LNMO nanorods had diameters of 430 ± 120 nm and length about 2.05 ± 0.65 μm. Dual chemical oxidation states of the Ni and Mn ions were confirmed in the LNMO samples by X-ray photoelectron spectroscopy. Strong frequency dispersion dielectric behavior observed in the LNMO ceramics, is attributed to the space charge polarization and the oxygen vacancy induced dielectric relaxation. A ferroelectric-paraelectric phase transition appearing near 262 K (or 260 K) in the LNMO ceramics prepared from nanoparticles (or nanorods) was identified to be a second-order phase transition. The LNMO samples are ferromagnetic at 5 K but paramagnetic at 300 K. The LNMO nanoparticles had larger saturation magnetization (MS = 6.20 μB/f.u. @ 5 K) than the LNMO nanorods (MS = 5.68 μB/f.u.) due to a lower structural disorder in the LNMO nanorods. The semiconducting nature of the nanostructured LNMO with an optical band gap of 0.99 eV was revealed by the UV-visible absorption spectra. The present results enable the nanostructured LNMO to be a promising candidate for practical spintronic devices." @default.
- W4220970064 created "2022-04-03" @default.
- W4220970064 creator A5023073685 @default.
- W4220970064 creator A5030148590 @default.
- W4220970064 creator A5073582383 @default.
- W4220970064 creator A5074425746 @default.
- W4220970064 date "2022-03-16" @default.
- W4220970064 modified "2023-10-14" @default.
- W4220970064 title "Unraveling the Structural, Dielectric, Magnetic, and Optical Characteristics of Nanostructured La2NiMnO6 Double Perovskites" @default.
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- W4220970064 doi "https://doi.org/10.3390/nano12060979" @default.
- W4220970064 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/35335792" @default.
- W4220970064 hasPublicationYear "2022" @default.
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